SN54ACT7881
1024 × 18
CLOCKED FIRST-IN, FIRST-OUT MEMORY

SGAS004 - AUGUST 1995

features

• Member of the Texas Instruments Widebus^TM Family
• Independent Asynchronous Inputs and Outputs
• Read and Write Operations Can Be Synchronized to Independent System Clocks
• Programmable Almost-Full/Almost-Empty Flag
• Pin-to-Pin Compatible With SN74ACT7882, SN74ACT7884, and SN74ACT7811
• Input-Ready, Output-Ready, and Half-Full Flags
• Cascadable in Word Width and/or Word Depth
• Fast Access Times of 13ns With a 50-pF Load
• High Output Drive for Direct Bus Interface
• Released as DESC SMD (Standard Microcircuit Drawing) 5962-9562701NXD
• Qualified as a Military Plastic Device Per MIL-PRF-38535 (QML)
• Available in a Space-Saving 80-Pin Shrink Quad Flat (PN) Package

  Widebus is a trademark of Texas Instruments Incorporated.

   

description

A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. The SN54ACT7881 is organized as 1024 × 18 bits. The SN54ACT7881<?Index, "SN54ACT7881"> processes data at rates up to 50 MHz and access times of 13 ns in a bit-parallel format. Data outputs are noninverting with respect to the data inputs. Expansion is easily accomplished in both word width and word depth.

The SN54ACT7881 has normal input-bus to output-bus asynchronous operation. The special enable circuitry adds the ability to synchronize independent reads and writes to their respective system clocks.

The SN54ACT7881 is characterized for operation from -55°C to 125°C.